Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
51 + 20 = ______
6 × 10 = ______
4 × 10 = ______
80 − 10 = ______
79 + 20 = ______
62 + 10 = ______
58 + 20 = ______
64 − 10 = ______
56 − 10 = ______
32 + 20 = ______
52 − 10 = ______
27 − 10 = ______
85 − 10 = ______
8 × 10 = ______
53 + 20 = ______
17 + 20 = ______
81 + 20 = ______
32 − 10 = ______
23 + 20 = ______
45 − 10 = ______
